KR20160091733A - Automatic Feeding Apparatus for Rotifers - Google Patents

Abstract

The present invention provides a live food automatic supplying device used when culturing rotifer which may be a feed of larvae and fries of culturing fish. The live food automatic supplying device comprises: a refrigerating tank having a floor of a particular surface area, having a height, accommodating a microorganism suspension therein, and having a cover formed in an upper side thereof; a supplying pipe formed on one lower surface of the refrigerating tank, and supplying the microorganism suspension to the outside; a fixed quantity pump connected with the supplying pipe, and capable of automatically adjusting a supplied amount of the microorganism suspension; a cooling device disposed in the outside of the refrigerating tank, and cooling the microorganism suspension in the refrigerating tank; a magnet agitating device formed in a lower side of the floor of the refrigerating tank, and capable of agitating the microorganism suspension by rotating a magnet spin bar fed in the refrigerating tank. Waste of microalgae used as a feed for rotifer or the like is prevented, and rotifer raising water quality degradation is prevented. Accordingly, perishment can be prevented, and time and manpower consumed conventionally can be reduced.

Description

{Automatic Feeding Apparatus for Rotifers}

The present invention relates to an automatic feeding device for feeding food, and more particularly, to a feeding device for automatic feeding of food, which is equipped with a cooling device, a stirring device, and a metering pump so as to supply a predetermined amount of food organisms while maintaining freshness of food organisms.

Rotifera is an animal plankton belonging to Rotifera, Monogononta, Ploimida, and Brachionidae. Up to the 1960s, a large amount of oxygen was consumed in the eel fish farm to consume large amounts of eels. It was recognized as one of the causes. However, it is used as an important food creature indispensable in the process of seedling production of sea fishes, due to the non-pathogenic properties of rotifers, rapid breeding power, and nutrient delivery capability.

In addition to its high fertility, the rotifers are small in size, slow in swimming speed, almost in-situ in the water, and suitable for use as feedstuffs for aquaculture due to their habit of staying. In particular, it has a round body that can easily feed fishes of the aquaculture and fry, and it is also possible to cultivate high density of more than 2,000 per ㎖, and it is possible to cultivate a small caliber of small fishes such as fishes, aquatic fishes, poisonous fishes, It is very useful as an autonomous nutrition source of high quality fish.

Microalgae, yeast, bacteria, etc. are mainly used as food for the mass culture of these rotifers. Of these, breadsticks are readily available in large quantities and have attracted a great deal of attention in that they do not require a large-scale culture vessel such as phytoplankton. However, when baker yeast is only fed to rotifers for a long time, it causes malnutrition in rotifers. When the rotifers thus produced are fed to aquaculture fish and fry, nutritional deficiencies occur in cultured fishes and fry. These nutritional deficiencies are believed to be mainly due to the lack of polyunsaturated fatty acids (HUFA) contained in food.

Therefore, phytoplankton (microalgae) is mainly used for stable cultivation of rotifers and sufficient nutrition. Representative species include Nannochloropsis, Tetraselmis, Dunaliella, etc. Recently, industrially mass-produced and concentrated chlorella has been used easily. Vitamin B12, which is an essential nutrient for the growth of rotifers, is added to this chlorella, which is useful for nutrition in the mass culture of rotifers.

When concentrated chlorella is used as a food for rotifers, the chlorella culture should be able to continuously supply the desired amount in fresh conditions. If untouched food is left untreated by rotifers, it can lead to deterioration of the quality of the breeding water and may lead to the occurrence of other pathogenic organisms, leading to the death of rotifers. Especially, in the case of high density culture of rotifers, it is necessary to supply fresh chlorella for the management of the quality of the breeding water, and it is necessary to feed proper amount of food organisms according to the increase rate of the rotifer individuals.

Generally, fish seed producers are supplying refrigerator with small amount of the culture liquid while maintaining refrigerated state by putting ice pack in 20L tank or ice box to freshly supply chlorella culture liquid when culturing rotifers. In this case, it was troublesome for the user to manage freshness of the chlorella by exchanging the culture solution and the ice pack from time to time. When the fresh chlorella culture is supplied to the rotifer, the occurrence of pathogenic bacteria causes massive death of the rotifer, so some aquaculturists have used the broth refrigerator and the pump to supply the culture medium.

However, even in this case, it is not easy to supply a certain amount of chlorella since the microalgae are likely to form sludge under the culture medium while feeding the microalgae culture liquid to the rotifers. To keep the concentration of the chlorella culture liquid uniformly, It was troublesome to stir. Therefore, it is difficult to maintain the freshness of the chlorella culture even though it consumes a lot of time and manpower.

Korean Patent No. 10-0326593 discloses a method of controlling the pH of a culture liquid, comprising a culture tank, a temperature control means for keeping the temperature of the culture liquid in the culture tank constant, a pH adjusting means for controlling pH of the culture liquid, Discloses a high-density culture apparatus and a culture method of a rotifer comprising chlorella supplying means for supplying chlorella used as food for rotifers, and filtration means for removing suspended matters in the culture liquid. Korean Patent Laid-Open No. 10-2011-0002585 discloses a method for improving the digestive enzyme activity of a rotifer by feeding and culturing a carbohydrate together with food during the culture of the rotifer, thereby increasing the initial digestive power of the fish Discloses a method for culturing a rotifer for enhancing the activity of digestive enzymes so as to improve not only growth but also survival rate. Korean Patent Registration No. 10-1270650 discloses a method for automatically and continuously supplying a food feed such as phytoplankton fed to a food organism in order to produce shellfish such as oysters in a limited water tank on the land At least one aquaculture tank capable of culturing shellfish, a support having a predetermined height outside the aquaculture tank, at least one support extending horizontally from the support, and a feeder supply container detachably connected to the support, The biological supply container is detachably installed so that the container outlet faces in the direction of gravity. A stopper having a plurality of through holes is mounted at the outlet of the feeder biological supply container. A tube for feeding the food creature is connected to the outside of the container. A tube capable of supplying air into the container is mounted, The pipe is connected to a control device that can control the pump and the pump, and it is configured to supply a certain amount of air to the food supply container inside the feeding chamber. Therefore, A feeding device for a feeding device for a shellfish building style having an effect of collectively managing a water tank of a living body. However, the above-mentioned prior arts are merely a device for supplying chlorella to a rotifer incubator. In the present invention, a cooling device for maintaining the freshness of food organisms and a stirring device for uniformly mixing the culture medium of food organisms are provided, It is different from the automatic feeding device for feeding food that can save time and labor as well as the quantitative supply box.

There has been a problem in that it is not easy to maintain the freshness of the microalgae when the concentrated microalgae are fed for food culture of the fishes of the cultured fishes such as rotifers and the fishes. In addition, when microalgae suspensions were excessively supplied to rotifers and the like, microalgae, which had not been interfered with, lowered the quality of the water in the breeding water, thereby causing pathogens or leading to mortality such as rotifers. Accordingly, the present invention is to provide an automatic feeding device for feeding foodstuffs which can supply an appropriate amount of microalgae to the rotifers and the like, and can keep it fresh while being supplied.

In order to solve the above problems, the present invention provides a micro-algae suspension having a bottom and a height of a certain area and having a micro-algae suspension therein, a refrigerating tank having a lid formed thereon, A metering pump connected to the supply pipe and the supply pipe for automatically controlling the supply amount of the microalgae suspension, a cooling device provided outside the refrigeration tank for cooling the microalgae suspension in the refrigeration tank, a magnet spin installed in the bottom of the refrigeration tank, And a magnetic stirrer capable of rotating the bar to stir the microalgae suspension.

In the automatic feeding device for feeding food, provided in the present invention, when the culture of rotifers and the like is carried out, the micro-algae suspension is stirred with a magnetic stirring device while maintaining the freshness of the concentrated microalgae through a cooling device to uniformize the concentration of the microalgae suspension in the container .

In addition, by controlling the amount of food organisms to be supplied to the rotifers through the dosing pump, it is possible to prevent waste of microalgae used as food in the culture of rotifers and prevent deterioration of water quality for breeding water for rotifers and the like, , The time and manpower consumed for this purpose can be saved.

1 is a side cross-sectional view of an automatic feeding device for feeding food according to the present invention.
2 is a bottom plan view of an automatic feeding device for feeding food according to the present invention.
3 is a perspective view of an automatic feeding device for feeding food according to the present invention.
4 is a perspective view of an automatic feeding device for feeding food according to the present invention.

Recently, there has been a lot of attempts to establish a complete mode for each fish species in order to utilize biological resources regardless of the external environment. For this purpose, producing artificial seeds is an important process that must precede anything. Especially, after raising, fertilizing and hatching, it is possible to produce stable seedling by increasing the survival rate of the frogs and fry. Therefore, production of small-caliber aquaculture fish before the feeding of diets suitable for each aquaculture species and production of rotifers suitable for food creatures of the fry have become an important part of the aquaculture industry.

The present invention relates to an automatic feeding device for feeding food microorganisms such as rotifers and the like, which can feed stable microbial algae in a fresh state, in the cultivation of rotifers and the like which are important food animals in the production of aquaculture seeds. Hereinafter, the present invention will be described in detail with reference to specific examples.

1 is a side sectional view of a feeding device for feeding food according to the present invention. Bacteria, bread yeast, etc. are available for rotifers, but microalgae such as chlorella, Nannochloropsis, Tetraselmis, and Dunaliella, which are mass produced and concentrated in nutritional supply, are suitable for use. However, concentrated microalgae have no life activity, so freshness tends to drop in the process of suspending them in a culture medium and supplying them to rotor rotors and the like. In this case, undesirable pathogenic or non-pathogenic bacteria are proliferated. When such a microalgae suspension is supplied to a rotifer or the like, it often leads to mass mortality such as rotifers.

Therefore, in order to stably supply the microalgae for culturing the rotifers and the like while maintaining the freshness of the concentrated microalgae, the automatic feeding device of the present invention has a floor and a height of a certain area, A refrigeration tank 100 having a lid 130 formed on the upper part thereof, a supply pipe 240 formed on one side of the lower part of the refrigeration tank for supplying the micro-algae suspension to the outside and a supply pipe connected to the supply pipe to automatically control the supply amount of the micro- And a metering pump (230).

The cooling tank 100 is installed outside the refrigeration tank 100 and includes cooling devices 300, 310 and 320 for cooling the suspension of microalgae in the refrigeration tank 100. The refrigeration tank 100 is installed at the bottom of the refrigeration tank 100, And a magnetic stirrer 400 capable of rotating the magnet spin bar 420 inserted in the magnetic stir bar to stir the fine algae suspension.

The refrigeration tank (100) can be used in a 10 to 40 L container and is made of stainless steel or plastic to facilitate the maintenance of the low temperature state of the suspension of the microalgae. A cooler 320 is provided outside the refrigerating tank 100 to keep the refrigerating tank 100 at a low temperature. The cooler 320 is cooled by the compressor 300 located inside the automatic food feeder, and serves as an evaporator of the refrigerant condensed by the condenser 310 connected thereto, thereby lowering the temperature of the refrigerant tank 100.

At this time, the fan 330 is turned to prevent the condenser 310 and the compressor 300 from overheating. The wind generated by the fan 330 cools the cooling device such as the condenser 310 and the compressor 300 and then is discharged to the outside through the ventilation hole 120 formed in the lower part of the rear side of the feeding device.

An outlet of the microalgae suspension is formed in the lower part of the refrigeration tank 100 and connected to the supply pipe 240 so as to be supplied to the food such as a rotifer. At this time, a mesh 200 is formed at the outlet of the bottom of the refrigerating tank 100 to prevent the unfrozen lumps such as dense microalgae, sludge lumps and the like from flowing into the supply pipe 240 to prevent the supply pipe 240 from being clogged.

The supply pipe 240 is connected to the metering pump 230 so that a predetermined amount of micro-algae suspension is automatically supplied to organisms such as rotifers. If the microalgae to be used are concentrated or frozen, it is likely to be decayed in the suspension state. Therefore, if the microalgae are not rapidly fed after being supplied to a rotifer or the like, water quality in the breeding water may be deteriorated. In the case of food organisms such as rotifers, which aim to cultivate high density, deterioration of water quality is a big problem. Therefore, it is important to supply the amount of microalgae constantly enough to exhaust the rotifers and the like.

The metering pump 230 can prevent the deterioration of the water quality of feeding water such as rotifers and the waste of microalgae to be used by allowing a predetermined amount of microalgae suspension to be supplied to the rotifer incubator.

In order to supply a certain amount of microalgae to the rotifers and the like, it is necessary to maintain the concentration of the microalgae suspension uniformly. If the microalgae suspension is not agitated, the microalgae will form sludge under the container, and the suspension will become non-uniform and the concentration of the microalgae will vary according to the portion of the container. In this case, microalgae may be supplied excessively or insufficiently even if a microalgae suspension of the same amount is supplied to an incubator such as a rotifer. In the case of an insufficient supply of food, it is difficult to expect good growth of rotifers and the like, and excessive feeding of microalgae may cause deterioration of water quality.

Conventionally, the microalgae suspension is manually stirred by hand several times during the feeding of the microalgae. In this case, however, the microalgae suspension has a problem that the external exposure is increased and contamination is easy and the stirring is not uniform.

In order to solve this problem, a magnetic stirrer 400 is installed at the bottom of the bottom of the refrigerating tank 100. When a magnet is inserted into the magnet stirring apparatus 400 and the power is connected to rotate the motor 410, the magnet of the magnet stirring apparatus 400 rotates. At this time, the magnet spin bar 420 inserted into the refrigerating tank 100 rotates together with the magnet on the bottom while rotating the liquid content in the refrigerating tank 100, that is, the fine algae suspension to form a vortex and stir.

The magnet spin bar 420 may be coated with PTFE to agitate the solution while minimizing interaction with the solution. The magnet spin bar 420 is selected according to the size of the bottom of the refrigerating tank 100, the amount of the fine algae suspension, and the number of the magnetic stirrers 400.

One or a plurality of the magnetic stirrer 400 may be installed at the bottom of the refrigerating tank 100 according to the size of the refrigerating tank 100 and the amount of the microalgae suspension to be stirred. At this time, the position of the outlet of the microalgae suspension in the lower part of the refrigeration tank 100 is adjusted according to the number and position of the installed magnetic stirrer 400.

The partitioning plate 160 is formed in the lower space of the refrigerating tank 100 to separate the cooling devices 300, 310 and 320 from the magnet stirring device 400 and the metering pump 230, Prevent overheating of each device.

2 is a bottom plan view of an automatic feeding device for feeding food according to the present invention. At least one magnet spin bar 420 is installed on the bottom of the refrigerating tank 100. The magnet spin bar is rotated inside the refrigerator tank by the rotation of the magnet stirring device 400 installed under the bottom of the refrigerating tank. However, when the bottom of the refrigerating tank is horizontal, as the plurality of magnet spin bars rotate at a high speed, they may move irregularly such as a magnetic spin bar collides inside the refrigerating tank due to interference of vortices due to mutual rotary motion.

Therefore, the magnet spin bar is rotated at the bottom of the refrigeration tank so that the magnet spin bar rotates inside the radius of rotation. This can solve this problem by forming the portion where the magnet spin bar rotates more concave than the bottom of the refrigerator tank. The diameter of the concave portion in which the magnet spin bar formed in a portion of the refrigeration tank bottom 700 rotates is 10-30% of the height of the magnet spin bar in consideration of the vortex caused by the rotation of the magnet spin bar.

3 and 4 are perspective views of an automatic feeding device for feeding food according to the present invention. A control box 150 is installed on the front portion of the automatic feeding device for food. The control box 150 is provided with a refrigeration switch 340 for controlling the refrigerator, a stirring controller 430 for controlling the magnetic stirrer, and an automatic feed controller 250 for automatically feeding a predetermined amount of the suspension of the untreated birds So that the adjustment can be facilitated.

On the one side of the outer wall 110, a supply tube 240, through which the amount of fine algae suspension specified by the automatic supply controller 250 flows out by the metering pump 230, is connected to an incubator such as a rotifer.

A drain pipe 210 connected to the outlet of the micro-algae suspension below the refrigeration tank 100 and a drain valve 220 for controlling the drain pipe 210 are formed on the rear side of the automatic feeding device. When discharging the contents in the refrigeration tank 100 or cleaning the refrigerated tank, the supply pipe 240 is closed and the discharge pipe 210 is opened and used.

The automatic feeding device for feeding food according to the present invention is provided with a cooling device for maintaining the freshness of food creatures and a stirring device for uniformly mixing the culture liquid of food creatures to supply fresh food creatures in a quantitative manner and to save time and labor .

The present invention relates to a cooling device for maintaining the freshness of concentrated microalgae or the like to be fed in the culture of a rotifer or the like and an agitating device for uniformly mixing a culture medium of food organisms and adjusting a minute amount of microalgae to be supplied to a rotifer or the like By installing the metering pump together, it is possible to supply fresh food creatures to the rotifers, etc. at the same time as it can save time and manpower for industrial use.

100: refrigerator tank 110: outer wall 120: ventilation hole
130: Lid 140: Handle 150: Control box
160: partition plate 200: mesh 210: drainage pipe
220: drain valve 230: metering pump 240: supply pipe
250: Automatic supply regulator 300: Compressor 310: Condenser
320: cooler 330: fan 340: refrigerator switch
400: Magnetic stirring device 410: Motor 420: Magnet spin bar
430: stirrer 700: refrigerated tank bottom

Claims (4)

A cooling device which has a floor and a height of a predetermined area and accommodates a microalgae suspension therein and is provided outside a refrigeration tank having a lid on the top thereof to cool a microalgae suspension in a refrigeration tank;
A magnet stirring device installed at a lower portion of the bottom of the refrigerating tank and capable of stirring the suspension of the fine algae by rotating the magnet spin bar inserted in the refrigerating tank;
And a metering pump formed on a lower surface of the refrigerating tank, the metering pump being connected to a supply pipe for supplying the micro-algae suspension to the outside and automatically controlling the supply amount of the micro-algae suspension.
The automatic feeding device for feeding food according to claim 1, wherein at least one magnetic stirrer is provided and a mesh is formed at a bottom of the refrigerator tank.
The feeding device according to claim 1, wherein the microalgae are Nannochloropsis, Tetraselmis, Dunaliella or chlorella.
[2] The automatic feeding device for feeding food according to claim 1, wherein a recess is formed in a part of the bottom of the refrigerator tank so that a magnetic spin bar rotates.

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